{"id":"CVE-2026-48096","aliases":["GHSA-8396-jffm-qx4w","GO-2026-5239"],"url":"https://o3.security/vulnerability/CVE-2026-48096","summary":"OpenFGA: Cache-key delimiter injection in openfga/openfga shared-iterator and v2 iterator caches enables intra-store authorization-decision poisoning","details":"### Description\nIn OpenFGA, when iterator caching is enabled, two distinct check requests can produce the same cache key, leading to OpenFGA reusing an earlier cached result for a subsequent request.\n\n### Preconditions\nThis applies if the following preconditions are present:\n\n- FGA runs with SharedIteratorCache enabled,\n- FGA runs with ListObjectsIteratorCache enabled.\n\n### Fix\nUpgrade to version 1.16.0 or greater.\n\n### Acknowledgements\nOpenFGA would like to thank @j4xT for the discovery and the detailed report.","published":"2026-06-10T15:09:59.042Z","modified":"2026-10-24T10:51:48.125562384Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.00101,"percentile":0.01011,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/openfga/openfga","fixedVersion":"1.16.0"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/openfga/openfga/releases/tag/v1.16.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48096.json"},{"type":"ADVISORY","url":"https://github.com/openfga/openfga/security/advisories/GHSA-8396-jffm-qx4w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-48096"},{"type":"PACKAGE","url":"https://github.com/openfga/openfga"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:51:48.125562384Z"}}